From c20beb9cc5a8bf72ffe6aada664c09d6c702ca01 Mon Sep 17 00:00:00 2001 From: "Michael J. Spencer" Date: Tue, 7 Dec 2010 18:41:59 +0000 Subject: [PATCH] Support: Remove Alarm. It is unused (via local grep and google code search). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121160 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Support/Alarm.h | 51 ------------------------- lib/Support/Alarm.cpp | 33 ---------------- lib/Support/CMakeLists.txt | 3 -- lib/Support/Unix/Alarm.inc | 72 ----------------------------------- lib/Support/Windows/Alarm.inc | 43 --------------------- 5 files changed, 202 deletions(-) delete mode 100644 include/llvm/Support/Alarm.h delete mode 100644 lib/Support/Alarm.cpp delete mode 100644 lib/Support/Unix/Alarm.inc delete mode 100644 lib/Support/Windows/Alarm.inc diff --git a/include/llvm/Support/Alarm.h b/include/llvm/Support/Alarm.h deleted file mode 100644 index 51eaf2c8455..00000000000 --- a/include/llvm/Support/Alarm.h +++ /dev/null @@ -1,51 +0,0 @@ -//===- llvm/Support/Alarm.h - Alarm Generation support ----------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file provides an operating system independent interface to alarm(2) -// type functionality. The Alarm class allows a one-shot alarm to be set up -// at some number of seconds in the future. When the alarm triggers, a method -// is called to process the event -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_SYSTEM_ALARM_H -#define LLVM_SYSTEM_ALARM_H - -namespace llvm { -namespace sys { - - /// This function registers an alarm to trigger some number of \p seconds in - /// the future. When that time arrives, the AlarmStatus function will begin - /// to return 1 instead of 0. The user must poll the status of the alarm by - /// making occasional calls to AlarmStatus. If the user sends an interrupt - /// signal, AlarmStatus will begin returning -1, even if the alarm event - /// occurred. - /// @returns nothing - void SetupAlarm( - unsigned seconds ///< Number of seconds in future when alarm arrives - ); - - /// This function terminates the alarm previously set up - /// @returns nothing - void TerminateAlarm(); - - /// This function acquires the status of the alarm. - /// @returns -1=cancelled, 0=untriggered, 1=triggered - int AlarmStatus(); - - /// Sleep for n seconds. Warning: mixing calls to Sleep() and other *Alarm - /// calls may be a bad idea on some platforms (source: Linux man page). - /// @returns nothing. - void Sleep(unsigned n); - - -} // End sys namespace -} // End llvm namespace - -#endif diff --git a/lib/Support/Alarm.cpp b/lib/Support/Alarm.cpp deleted file mode 100644 index 58ad609cd2c..00000000000 --- a/lib/Support/Alarm.cpp +++ /dev/null @@ -1,33 +0,0 @@ -//===- Alarm.cpp - Alarm Generation Support ---------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Alarm functionality -// -//===----------------------------------------------------------------------===// - -#include "llvm/Support/Alarm.h" -#include "llvm/Config/config.h" - -namespace llvm { -using namespace sys; - -//===----------------------------------------------------------------------===// -//=== WARNING: Implementation here must contain only TRULY operating system -//=== independent code. -//===----------------------------------------------------------------------===// - -} - -// Include the platform-specific parts of this class. -#ifdef LLVM_ON_UNIX -#include "Unix/Alarm.inc" -#endif -#ifdef LLVM_ON_WIN32 -#include "Windows/Alarm.inc" -#endif diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt index a64a18836b3..1edd052bbb2 100644 --- a/lib/Support/CMakeLists.txt +++ b/lib/Support/CMakeLists.txt @@ -54,7 +54,6 @@ add_llvm_library(LLVMSupport regstrlcpy.c # System - Alarm.cpp Atomic.cpp Disassembler.cpp DynamicLibrary.cpp @@ -75,7 +74,6 @@ add_llvm_library(LLVMSupport Threading.cpp TimeValue.cpp Valgrind.cpp - Unix/Alarm.inc Unix/Host.inc Unix/Memory.inc Unix/Mutex.inc @@ -88,7 +86,6 @@ add_llvm_library(LLVMSupport Unix/system_error.inc Unix/ThreadLocal.inc Unix/TimeValue.inc - Windows/Alarm.inc Windows/DynamicLibrary.inc Windows/Host.inc Windows/Memory.inc diff --git a/lib/Support/Unix/Alarm.inc b/lib/Support/Unix/Alarm.inc deleted file mode 100644 index fb42b6c65da..00000000000 --- a/lib/Support/Unix/Alarm.inc +++ /dev/null @@ -1,72 +0,0 @@ -//===-- Alarm.inc - Implement Unix Alarm Support ----------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the UNIX Alarm support. -// -//===----------------------------------------------------------------------===// - -#include -#include -#include -using namespace llvm; - -/// AlarmCancelled - This flag is set by the SIGINT signal handler if the -/// user presses CTRL-C. -static volatile bool AlarmCancelled = false; - -/// AlarmTriggered - This flag is set by the SIGALRM signal handler if the -/// alarm was triggered. -static volatile bool AlarmTriggered = false; - -/// NestedSOI - Sanity check. Alarms cannot be nested or run in parallel. -/// This ensures that they never do. -static bool NestedSOI = false; - -static RETSIGTYPE SigIntHandler(int Sig) { - AlarmCancelled = true; - signal(SIGINT, SigIntHandler); -} - -static RETSIGTYPE SigAlarmHandler(int Sig) { - AlarmTriggered = true; -} - -static void (*OldSigIntHandler) (int); - -void sys::SetupAlarm(unsigned seconds) { - assert(!NestedSOI && "sys::SetupAlarm calls cannot be nested!"); - NestedSOI = true; - AlarmCancelled = false; - AlarmTriggered = false; - ::signal(SIGALRM, SigAlarmHandler); - OldSigIntHandler = ::signal(SIGINT, SigIntHandler); - ::alarm(seconds); -} - -void sys::TerminateAlarm() { - assert(NestedSOI && "sys::TerminateAlarm called without sys::SetupAlarm!"); - ::alarm(0); - ::signal(SIGALRM, SIG_DFL); - ::signal(SIGINT, OldSigIntHandler); - AlarmCancelled = false; - AlarmTriggered = false; - NestedSOI = false; -} - -int sys::AlarmStatus() { - if (AlarmCancelled) - return -1; - if (AlarmTriggered) - return 1; - return 0; -} - -void sys::Sleep(unsigned n) { - ::sleep(n); -} diff --git a/lib/Support/Windows/Alarm.inc b/lib/Support/Windows/Alarm.inc deleted file mode 100644 index e0d00a0142b..00000000000 --- a/lib/Support/Windows/Alarm.inc +++ /dev/null @@ -1,43 +0,0 @@ -//===-- Alarm.inc - Implement Win32 Alarm Support ---------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Win32 Alarm support. -// -//===----------------------------------------------------------------------===// - -#include -using namespace llvm; - -/// NestedSOI - Sanity check. Alarms cannot be nested or run in parallel. -/// This ensures that they never do. -static bool NestedSOI = false; - -void sys::SetupAlarm(unsigned seconds) { - assert(!NestedSOI && "sys::SetupAlarm calls cannot be nested!"); - NestedSOI = true; - // FIXME: Implement for Win32 -} - -void sys::TerminateAlarm() { - assert(NestedSOI && "sys::TerminateAlarm called without sys::SetupAlarm!"); - // FIXME: Implement for Win32 - NestedSOI = false; -} - -int sys::AlarmStatus() { - // FIXME: Implement for Win32 - return 0; -} - -// Don't pull in all of the Windows headers. -extern "C" void __stdcall Sleep(unsigned long); - -void sys::Sleep(unsigned n) { - ::Sleep(n*1000); -} -- 2.34.1